Reed Relays & Optocouplers | Introduction

Reed relays contain an electromagnetic coil and reed switch. When power is applied to the coil, the reed switch is activated. Reed relay applications continue to grow every year despite severe competition from other small switching devices such as semiconductors and electromechanical armature style relays. Because the contacts in a reed relay are hermetically sealed, the contacts can switch low level signals as low as femtoamps and nanovolts. Reed relays are ideally used for switching applications requiring low and stable contact resistance, low capacitance, high insulation resistance, long life and small size. Choose from 100's of standard relays such as our ATEX approved reed relays, bistable reed relays, high frequency reed relays, high insulation reed relays, high voltage reed relays, latching reed relays, low thermal reed relays, surface mount reed relays, or custom reed relays for specialty requirements such as high RF switching, very high voltage switching, extremely low voltage or low current switching. Standex-Meder Electronics is now offering a line of optocoupler series that can safely handle
input/output isolation as high as 20,000 VDC that have met and been certified for the stringent requirements of ATEX (Directive 94/9/EC and 1999/92/EC). Our optocoupler series offer insulation resistances as high as 1013 ohms, operate in less than 10 μsec, and creepage distances from input to output are greater than 14.5 mm. These optocouplers essentially operate in all kinds of extremely hazardous, explosive, moist, dirty environments and operate from -40°C to 85°C. They also transfer their digital or analog signal information from input to output drawing no potentially hazardous arc. Optocouplers have no moving parts and operate safely for billions of operations, are not affected by magnetic fields and can operate or transfer information at a 50 kHz rate.

3-8 poles N.O. (Form A) Reed Relays

3-8 poles N.O. (Form A) Reed Relays are reed relay products containing anywhere from 3 to 8 internal reed switches that have their contacts in the normally open state.

The MRX Series is an ATEX approved reed relay according to PTB-01 ATEX 2050 U and is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX ATEX approved reed relay is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

ATEX Approved Reed Relays & Optocouplers

Often times electronic equipment is required to carry out certain functions in potentially explosive atmospheres. To prevent potential ignition of the explosive atmosphere via a spark or arc in these environments, all components must be selected very carefully. Components meeting these requirements are generally referred to as intrinsically safe or ATEX approved. Our ATEX approved reed relays & optocouplers are tested such that they will not become an ignition point when subjected to short circuits or adjacent component failures. They must also switch to a defined state when subjected to overload conditions. Our 522-03-i, 525-03-0-i, 535-04-0-i, and 567-70-i Optocoupler series are all ideal for this environment.
Generally, intrinsically safe or ATEX approved components are ideally suited in the mining industry, chemical processing plants, refineries, power stations and high dust producing plants. Any potentially flammable atmospheres represent areas of applications for these products. Standards for these components are presented in EN500200. The required air and creepage paths as well as the electric strength are defined in detail as follows: For voltage specification, a peak voltage of 375 Volts must not be exceeded in order to meet accepted worldwide standards. The sum of the input and output voltages must not be higher than 375 Volts Peak. The coil input has a voltage of 24 Volts max. and the contacts produce 230 VRMS or 325 volts peak output. Input plus output = 24 + 325 = 349 Volts peak. Here the safety margin for the voltage for the input and output meet their peak voltage limit of 375 volts. The air path for isolation of this voltage is 6mm and the creepage path is 10mm. The isolation inside the component through potting compounds is 2mm. Another important value is the Comparative Tracking index (CTI) value of plastic. In this case, the value must be greater than 175. The electric strength between the input and output is tested at 1500 VRMS or 2x the nominal voltage +1000

The MRX Series is an ATEX approved reed relay according to PTB-01 ATEX 2050 U and is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX ATEX approved reed relay is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

DPDT Changeover (2 Form C) Reed Relays

DPDT Changeover (Form C) reed relay products are a changeover or double-pole double throw switch type where a normally closed contact opens before a normally open contact closes. They can also be used as a Form-B, normally-closed reed switch (N.C.).

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

The HF series high frequency reed relay and high power reed relay is capable of carry currents of 5A@30MHz. Specially packaged coil with a PCB pin out for the coil only. This high frequency reed relays’ switch contacts are available for direct wiring (sky wiring). Equipped with a patented external electrostatic and magnetic shield. RF reed relay has a breakdown voltage up to 9kVDC.

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

Form B Reed Relays

Form B Reed Relays require the use a permanent magnet to configure the reed switch in the normally closed state. The permanent magnet is mounted directly to the reed switch, internal to the actuating coil. The normally closed state is achieved by adjusting the magnetic strength of the magnet for proper operation. Proper magnet adjustment is achieved when the magnet will suitably close the contacts but still allow them to re‐open once coil power is applied. Once this is achieved, the reed switch will remain in the closed state with no external power applied to the relay. Therefore, the Form B reed relays can stay in the closed state never drawing any power for long periods of time. You can also dramatically decrease the amount of power consumption by using a Latching Reed Relay application.

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

The H Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. This high voltage reed relay is designed with a specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Replacement for mercury wetted relay.

The HF series high frequency reed relay and high power reed relay is capable of carry currents of 5A@30MHz. Specially packaged coil with a PCB pin out for the coil only. This high frequency reed relays’ switch contacts are available for direct wiring (sky wiring). Equipped with a patented external electrostatic and magnetic shield. RF reed relay has a breakdown voltage up to 9kVDC.

General purpose micro single in-line (SIL) MS Series Reed Relay with rugged thermoset overmolded package has a standard internal magnetic shield. This instrumentation grade relay can be stacked in close matrices. Available in high frequency version up to 1GHz. Optional diode. UL approval.

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

General Purpose Reed Relays

The BE, DIL, DIP, MS, NP, SIL and UMS are the most popular surface mount (SMD) reed relays for general purpose use including but limited to automated test equipment, medical equipment, industrial applications, telecommunications, etc.

General purpose micro single in-line (SIL) MS Series Reed Relay with rugged thermoset overmolded package has a standard internal magnetic shield. This instrumentation grade relay can be stacked in close matrices. Available in high frequency version up to 1GHz. Optional diode. UL approval.

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

High Frequency Reed Relays

High frequency reed relay products are capable of switching signals from DC up to 7 GHz, attained by keeping the signal path as short as possible and using an internal coaxial shield with a consistent 50 Ohm impedance path. Not only is it excellent with RF signals, but is also great for digital signals where the skew rates or effects on the rise time of fast digital pulses is less than 40 picoseconds through the relay. Internal magnetic shield prevents any magnetic coupling effects between relays when designing a two dimensional or three dimensional relay matrix. These RF reed relays have a flat frequency response out to 20 GHz. Their cost is moderate and stable. Their size is becoming smaller and smaller.

The single in-line SIL RF series high frequency reed relay is capable of switching signals from DC to 1.5GHz. This instrumentation grade RF reed relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

The HF series high frequency reed relay and high power reed relay is capable of carry currents of 5A@30MHz. Specially packaged coil with a PCB pin out for the coil only. This high frequency reed relays’ switch contacts are available for direct wiring (sky wiring). Equipped with a patented external electrostatic and magnetic shield. RF reed relay has a breakdown voltage up to 9kVDC.

The LI series is a high voltage reed relay and high insulation reed relay that is epoxy encapsulated. This high voltage reed relay features a high insulation resistance (IR) >10^13 Ω and is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC. UL approval.

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

High Voltage Reed Relays

High voltage reed relays are reed relays used for switching high voltage applications in photovoltaic systems, medical, industrial, telecommunications, and (ATE) automated test equipment markets. High voltage reed relay products are capable of switching up to 10,000 VDC and breakdown voltages to 15,000 VDC as well as continuous carry currents up to 15 Amps and pulsed currents to 30 Amps. Our high voltage relays come in a variety of high voltage switching options and package sizes in PCB mount and free-standing applications with optional direct wiring leads. High voltage reed relays are ideal in radio transmitters 1 MHz to 30MHz, communication equipment, antenna transmitter and receive applications, cable test equipment, defibrillators, electrosurgical generators used with an electronic scalpel for electrocauterization, replacement of mercury wetted relays, automated test equipment, and much more.

The SHV reed relay is a single in-line and high voltage relay or instrumentation grade reed relay supplied in a molded housing, capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series. It is even smaller than the former potted SIL-HV Reed Relay.

The SIL HV single in-line series is a high voltage reed relay and instrumentation grade reed relay supplied in an epoxy encapsulated package capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series.

The LI series is a high voltage reed relay and high insulation reed relay that is epoxy encapsulated. This high voltage reed relay features a high insulation resistance (IR) >10^13 Ω and is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC. UL approval.

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

The H Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. This high voltage reed relay is designed with a specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Replacement for mercury wetted relay.

Latching / Bistable (1 Form E) Reed Relays

A latching reed relay or bistable reed relay contains one or more reed switches with (Form E) contacts which are magnetically biased and can exist in either the normally open (N.O.) or normally closed (N.C.) state which is controlled by reversing the magnetic field. Bistable reed relays are used in applications calling for extremely small power requirements, particularly in battery powered devices.

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

Low Thermal Reed Relays

A low thermal reed relay is used to switch low voltages in the low microsecond (µV) range and not alter the signal level in any way after it has passed through the relay. Low thermal or low offset reed relays are used in applications where transducers are used that produce very low voltage signals that need to be switched and amplified. They are also used on the front end of high end multimeters and switching thermocouples in data acquisition systems as well as temperature measuring, data logging and measurement applications.

The MRX Series is an ATEX approved reed relay according to PTB-01 ATEX 2050 U and is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX ATEX approved reed relay is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

Optocoupler

The Optocoupler are composed of two circuits: an input circuit and an output circuit. A light emitting diode (LED) is the key input component, where the key output component is a photo-detector. Passing a current of approximately 10 ma through the two input terminals and through the light emitting diode, with the correct polarity, converts the electrical current into photons. The photons are then directed down a light tube or tunnel. At the end of the tunnel, the photons are incident on the photo detector that converts the photons back to an electric current. In this manner, the input information is transferred and amplified in the output detection circuit without any direct electrical conducting path. The longer the light tube the greater the distance between the metalized input terminals to the metalized output terminals. This insures a greater insulation resistance and high voltage isolation. Optocouplers handle hazardous environments and meet ATEX intrinsic safety requirements. Our line of optocouplers can safely handle input/output isolation as high as 20,000 VDC that have met and been certified for the stringent requirements of ATEX (Directive 94/9/EC and 1999/92/EC). This directive applies to equipment and protective systems that are used in factories where potentially explosive atmospheres exist such as in mining operations, flammable gas processing plants, some medical processing plants where ESD could be a real problem, and in any factory that requires high isolation and non-arcing environments.

530-03 Series Optocouplers for the galvanic separation of intrinsic safety circuits, Isolation voltage up to 20kVDC, CTR min. 0.5 (50%), cutoff 50kHZ. Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements min. 34mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

528 Series Optocouplers for the galvanic separation of intrinsic safety circuits, Isolation voltage min. 10kVDC, CTR min. 0.9, cutoff 50kHZ. Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements up to 42mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

521 Series Optocouplers for the galvanic separation of intrinsic safety circuits, Isolation voltage min. 6kVDC, CTR min. 0.5, cutoff 50kHZ. Insulation resistance input /output up to 10^13 Ω. Distance between input and output for highest safety requirements up to 24.5mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

Relay Module

Relay modules have various input/output configurations and are designed in either a low-profile surface mount (SMD) package or high package through-hole or plug-in design. They feature multiple switching configurations ranging from 4-pole up to 8-pole (2C Matrix).

SPDT Changeover (1 Form C) Reed Relays

Changeover reed relays can contain one or more internal (Form C) reed switches or single pole double throw SPDT reed switches. The changeover reed switch is hermetically sealed with 3 leads: a common lead, a normally open lead, and a normally closed lead. When operated the reed switch common contact will swing from the normally closed contact to the normally open contact. This is caused by the magnetic field produced by a coil or the magnetic field from a magnet. When the magnetic field is removed the common contact will revert back and come to rest on the normally closed contact.

The MRX Series is an ATEX approved reed relay according to PTB-01 ATEX 2050 U and is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX ATEX approved reed relay is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

SPST-N.O. (1 Form A) Reed Relays

SPST-N.O. (1 Form A) Reed Relays contain a single internal reed switch that is a single pole single throw type switch that has it's contacts in the normally open (Form A) position before any magnetic field is applied. They draw zero power in this state.

The SHV reed relay is a single in-line and high voltage relay or instrumentation grade reed relay supplied in a molded housing, capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series. It is even smaller than the former potted SIL-HV Reed Relay.

The MRX Series is an ATEX approved reed relay according to PTB-01 ATEX 2050 U and is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX ATEX approved reed relay is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

The SIL HV single in-line series is a high voltage reed relay and instrumentation grade reed relay supplied in an epoxy encapsulated package capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series.

The LI series is a high voltage reed relay and high insulation reed relay that is epoxy encapsulated. This high voltage reed relay features a high insulation resistance (IR) >10^13 Ω and is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC. UL approval.

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

The H Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. This high voltage reed relay is designed with a specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Replacement for mercury wetted relay.

The single in-line SIL RF series high frequency reed relay is capable of switching signals from DC to 1.5GHz. This instrumentation grade RF reed relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

The HF series high frequency reed relay and high power reed relay is capable of carry currents of 5A@30MHz. Specially packaged coil with a PCB pin out for the coil only. This high frequency reed relays’ switch contacts are available for direct wiring (sky wiring). Equipped with a patented external electrostatic and magnetic shield. RF reed relay has a breakdown voltage up to 9kVDC.

General purpose micro single in-line (SIL) MS Series Reed Relay with rugged thermoset overmolded package has a standard internal magnetic shield. This instrumentation grade relay can be stacked in close matrices. Available in high frequency version up to 1GHz. Optional diode. UL approval.

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

Surface Mount (SMD) Reed Relays

Surface mount reed relay designs are simpler and generally have fewer internal components. They are generally smaller, allowing them to take up less board space while meeting the critical board space cost aspects. In modern printed circuit board (PCB) manufacturing facilities surface mounting technology has become the dominant approach for component assemblies. Choose from high voltage, high frequency and relay modules low-profile over-molded reed relays, available with or without BGA (Ball Grid Arrays) and suitable for pick and place and surface mount soldering.

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

Through Hole (THT) Reed Relays

The SHV reed relay is a single in-line and high voltage relay or instrumentation grade reed relay supplied in a molded housing, capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series. It is even smaller than the former potted SIL-HV Reed Relay.

The MRX Series is an ATEX approved reed relay according to PTB-01 ATEX 2050 U and is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX ATEX approved reed relay is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

The SIL HV single in-line series is a high voltage reed relay and instrumentation grade reed relay supplied in an epoxy encapsulated package capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series.

The LI series is a high voltage reed relay and high insulation reed relay that is epoxy encapsulated. This high voltage reed relay features a high insulation resistance (IR) >10^13 Ω and is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC. UL approval.

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

The single in-line SIL RF series high frequency reed relay is capable of switching signals from DC to 1.5GHz. This instrumentation grade RF reed relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

General purpose micro single in-line (SIL) MS Series Reed Relay with rugged thermoset overmolded package has a standard internal magnetic shield. This instrumentation grade relay can be stacked in close matrices. Available in high frequency version up to 1GHz. Optional diode. UL approval.

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

Ultraminiature Reed Relays

Ultraminiature reed relay products are some of the smallest relays currently available in the world with a body length ranging from 8mm and below. Some of the smallest surface mount (SMD) relays in the industry, the CRR & CRF series is only 3.4 mm high, making it ideal for very low profile environments and automatic pick and place.